You have a box at the door and you rush to see what's inside - your PCB order!

Now is the moment of truth - do your boards match what you designed (or thought you designed). If you are good (or experienced or thorough), they'll be perfect. If not, you might have to make changes and resubmit.

For me, the SIlkscreen on the "AS" in NASA isn't 100% (though I tried hard). And the holes I swear were there for the two stars to let the LEDs shine through are not fully drilled out for some unknown reason. Also my battery holder footprint is upside down but that doesn't affect the electrical design as it's symmetrical.

Modification

As my LED holes are filled with something, I used a very small drill bit to get the hole through. The positioning was 100%, when the hole was drilled from the front, it came out where the LED was to be mounted. I drilled each out before soldering the circuit. 

ALso the battery holder works oriented as shown in the silkscreen or 180 degrees. Having the battery removal from the bottom allows for the pin backing.

Soldering

I took the parts I ordered and looked to get to work. Boy are these parts small. Ladyada said 1206 resistors are fine but it takes time, tweezers and a steady hand. Be sure you have a soldering iron with a fine tip.

There are two types of tweezers in the Featured Products page for holding SMD parts while soldering.

If you have not soldered surface mount (SMD) parts with a soldering iron, see this tutorial.

For the diodes, I put them on last. I put a battery on and flipped the slide switch. I then put an LED on the pads to ensure it would light, soldering it (with the power off) if correctly oriented. If it doesn't light, turn it around and it should if your resistors, switch and battery holder are soldered correctly and a battery is in the holder.

Final Check

When everything is soldered, turn the circuit on to ensure it works and that the LEDs shine through the holes to the front (see below).

Mounting

If you want to use this as jewelry, you can do a couple things:

1) Use a Magnetic Pin Back added to the back for mounting like a pin or brooch (see above).

2) Use a loop of wire through the top hole and make into a pendant with a chain going around your neck. Size the chain for where you want it to hang.

You can also put it on a backpack or any number of places.

Have fun with your PCB art!